Which of these describes Sinus Arrhythmia?

Select one option

Rate

160-240

Regularity

Regular

P Waves

Hidden in previous T wave

PR Interval

Unidentifiable

QRS

0.08-0.12

Rate

60-100

Regularity

Irregular

P Waves

Upright and uniform

PR Interval

0.12-0.20

QRS

0.08-0.12